We have developed a new procedure (Vir typing) for typing Streptococcus pyogenes, by amplifying the entire 5- to 7-kb variable vir regulon by long PCR. The amplified DNA is then cleaved with HaeIII and visualized by ethidium bromide fluorescence after agarose gel electrophoresis. A simple procedure for preparing DNA of sufficiently high quality from 96 samples was employed simultaneously. This ...

To shed light on the epidemiology of ascariasis in Ecuador and Zanzibar, 177 adult worms retrieved by chemo-expulsion from either people or pigs were collected, measured and subjected to polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis of the ribosomal internal transcribed spacer (ITS) region. Upon double digestion with RsaI and HaeIII, PCR-RFLP analysis re...

BACKGROUND AND OBJECTIVES To investigate coagulase gene polymorphism of MRSA and MSSA isolates from Shiraz teaching hospitals from 2011 to 2012. MATERIALS AND METHODS A total of 302 isolates of Staphylococcus aureus were collected from clinical specimens in three major teaching hospitals and confirmed on the basis of morphological characteristics and biochemical tests. The isolates were subje...

The polymerase chain reaction and restriction fragment length polymorphism (RFLP) of the internal transcribed spacer (ITS) region of the rRNA gene, using the enzyme DdeI were used for the molecular identification of ten species and one subspecies of Brazilian Biomphalaria. Emphasis is given to the analysis of B. oligoza, B. schrammi and B. amazonica. The RFLP profiles obtained using this enzyme...

Six soil samples (Pantnagar, Chamoli, Almora, Ranichauri, Pithoragarh and Badrinath) belonging to different geographical locations of Western Himalayas in India, were analyzed to diversify the nitrogen fixing bacterial community using nifH gene biomarker DNA from soil samples were isolated and amplified using nifH gene specific primers. Genomic DNA and PCR amplified products were then individua...

glass plate) was covered by Saran wrap, labeled by hot ink, and exposed 10 min to autoradiography film. The region corresponding to the fragment of interest was cut with a scalpel, the Saran wrap was removed, and the sandwich with the piece of the DEAE paper and Whatman 3MM paper was prepared as for unlabeled DNA fragment. The rest of the procedure was identical to that for the unlabeled DNA fr...

Figure 1. DNA from an Icelandic family was digested with Xbal and hybridised withpl71.14, asubclone from a cosmid isolated with p212/9. Autoradiographic exposure was for 16 hours. PCR-based detection of a polymorphic Haelll site in intron VII of the human albumin (ALB) gene J.C.Moolman, V.A.Corfield and G.Stevens Medical Research Council/University of Stellenbosch Centre for Molecular and Cellu...